Zotero does not display citation

Hello,
zotero plugin suddenly does not show citation, on page is only wheel buttons.
<span id=”zp-InText-zp-ID-1660709–DFQF9JZS–305-11″ class=”zp-InText-Citation loading” rel=”{ ‘api_user_id’: ‘1660709’, ‘pages’: ”, ‘items’: ‘{DFQF9JZS}’, ‘format’: ‘%num%’, ‘brackets’: ‘yes’, ‘etal’: ”, ‘separator’: ”, ‘and’: ” }”></span>

zotero does not work well on this page?:
https://nacestezapoznanim.cz/proc-neockovat/
passw: zoterodebug

zotero works fine on this page:
– this page is copy of https://nacestezapoznanim.cz/proc-neockovat/ but some part of the content was removed
https://nacestezapoznanim.cz/zotero-is-working-well/
passw: zoterodebug

Using developer console on page https://nacestezapoznanim.cz/proc-neockovat/ I obtain 500 internal server error.

request header:

Host: nacestezapoznanim.cz
User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:51.0) Gecko/20100101 Firefox/51.0
Accept: */*
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate, br
X-Requested-With: XMLHttpRequest
Referer: https://nacestezapoznanim.cz/proc-neockovat/
Cookie: wordpress_sec_d6897bf8cafaf4cde33b849096270751=vasek%7C1489745257%7C6webf4vwQ5BJSIeydUPQVjtd8C623Mae19IHVpsPpyl%7C250057ee30fa322649f25f1bd2db0a34cf15a001a22a4d142fc0fbcb4819235e; wp-saving-post=1758-saved; wordpress_test_cookie=WP+Cookie+check; wordpress_logged_in_*********************
DNT: 1
Connection: keep-alive
Pragma: no-cache
Cache-Control: no-cache

response:

Cache-Control: no-cache, must-revalidate, max-age=0
Connection: keep-alive
Content-Type: text/html; charset=UTF-8
Date: Fri, 03 Mar 2017 10:24:27 GMT
Expires: Wed, 11 Jan 1984 05:00:00 GMT
Server: nginx
Set-Cookie: can_download=0; expires=Fri, 03-Mar-2017 10:19:25 GMT; Max-Age=-300; path=/
Transfer-Encoding: chunked
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-Robots-Tag: noindex

Could you please provide me some steps how to solve this problem? Thank you. Vasek

• This topic was modified 9 years, 2 months ago by wpvasek.